What was the result of the Challenger disaster in 1986? The shuttle could no longer be launched. 7 astronauts died. The shuttle was completely destroyed. The shuttle program was discontinued.

Plss anybody know how to do this? ? i need the answers from a through d

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.